Air Pollution: Causes, Effects and Control · NCERT Biology

Which of the following is a major physiological effect of noise pollution at levels of 150 dB or more?

  1. Enhanced and heightened hearing ability
  2. Permanent damage to ear drums
  3. Increased rate of food digestion
  4. Significant reduction in heart rate
Show answer and explanation

Correct answer: Permanent damage to ear drums

Exposure to extremely high sound levels, such as 150 dB generated by a jet plane takeoff, can cause permanent hearing loss. It physically damages the ear drums and the delicate hair cells within the inner ear.

Difficulty: Medium Question 8 of 20

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